The researchers at Rice University recently managed to find a way to coat nanowires with PMMA (Poly(methyl methacrylate)) coating that provides good insulation from the counter electrode while still allowing ions to pass easily through.This minimized separation between two electrodes manages to make the battery much more efficient.
In a battery, there are two electrodes separated by a thick barrier. The main objective is to bring everything into close proximity so this electrochemistry becomes much more efficient.
To achieve this, researchers took the concept of 3D batteries and coated millions of nanowires to create the 3D structure from the bottom up. By increasing the height of the nanowires, the amount of energy stored is increased while keeping the lithium ion diffusion distance constant.
The whole process involves the growing of 10-micron-long nanowires through electrodisposition in the pores of an anoidized alumina template. Then PMMA is coated onto the nanowire array, resulting in an even casing from top to bottom. The result of this work is ultimately expected to be batteries for scalable microdevices that possess a greater surface area than thin-film batteries.
No comments:
Post a Comment